AT91SAM7XC256B-CU-999 Atmel, AT91SAM7XC256B-CU-999 Datasheet - Page 13
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AT91SAM7XC256B-CU-999
Manufacturer Part Number
AT91SAM7XC256B-CU-999
Description
IC MCU ARM7 256KB FLASH 100TFBGA
Manufacturer
Atmel
Series
AT91SAMr
Datasheet
1.AT91SAM7XC128B-CU.pdf
(47 pages)
Specifications of AT91SAM7XC256B-CU-999
Core Processor
ARM7
Core Size
16/32-Bit
Speed
55MHz
Connectivity
CAN, Ethernet, I²C, SPI, SSC, UART/USART, USB
Peripherals
Brown-out Detect/Reset, DMA, POR, PWM, WDT
Number Of I /o
62
Program Memory Size
256KB (256K x 8)
Program Memory Type
FLASH
Ram Size
64K x 8
Voltage - Supply (vcc/vdd)
1.65 V ~ 1.95 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
100-TFBGA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
5.4
6209DS–ATARM–17-Feb-09
Typical Powering Schematics
Adequate input supply decoupling is mandatory for VDDIN in order to improve startup stability
and reduce source voltage drop. The input decoupling capacitor should be placed close to the
chip. For example, two capacitors can be used in parallel: 100 nF NPO and 4.7 µF X7R.
The AT91SAM7XC512/256/128 supports a 3.3V single supply mode. The internal regulator
input connected to the 3.3V source and its output feeds VDDCORE and the VDDPLL.
1
Figure 5-1.
shows the power schematics to be used for USB bus-powered systems.
3.3V System Single Power Supply Schematic
from 4.5V (USB)
Power Source
ranges
to 18V
AT91SAM7XC512/256/128 Preliminary
DC/DC Converter
3.3V
VDDFLASH
VDDCORE
VDDOUT
VDDPLL
VDDIO
VDDIN
Regulator
Voltage
Figure 5-
13